Beth received her transplant, from 9:45-10:30 on Wednesday evening, December 14th. She received a very high number of stem cells (the range is 4 million to 8 million cells per Kg of body weight) -- she had a young, strong donor, and she got the 8 million.
She had a somewhat violent reaction to the infusion of cells, which lasted most of the night and the next day. Her fever went up to 103. Everyone’s initial response (all the medical folks) was that she was having an infection, and that is an appropriate place to look. Beth’s response was not common, but it happens. She seems to have settled down from that. They are continuing to give her two different antibiotics, Vancomycin, for staph infections, and Cefapime, which is good for pneumonia.
The next challenge will be that the effects of the chemotherapy (and I’m guessing they mean the Busulfan) really kick in on days 7-10. So we should be entering that phase now.
The purpose of the chemo was to destroy Beth’s existing bone marrow. This doesn’t happen all at once, but it happens over these 7-10 days. One of the doctors said that the existing marrow, while not yet “destroyed”, has been affected by the chemo and is not able to reproduce itself. And that’s where the new cells came in.
The new cells will begin to grow into new bone marrow. In the next couple of weeks, doctors will be looking for signs of engraftment, which occur probably during days 7-10 after the transplant. (These 7-10 days are different from the days 7-10 of chemo.)
30 days down the road, they will do another bone marrow biopsy and Chimerism testing to make certain that existing bone marrow is 100% donor and 0% Beth. If it's something other than that, it would be a bad sign.
So we are not yet out of the woods. There is a 35% chance of relapse. But we know, too, that during the conditioning phase and afterward (by tweaking the response to the graft-vs-host effect – the effect by which the new tissues perceive Beth’s old marrow as enemy and continue to destroy it), the hope is that we achieve that 100% cure. But it’ll be a year or two before we know that.
For more details on the transplant, and ongoing real-time updates, visit http://johnbugay.wordpress.com/.